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Lynna [10]
2 years ago
7

Charcoal appears black in color because it Question 17 options: has a black-colored pigment. reflects all wavelengths of light t

hat fall on it. absorbs all wavelengths of light that fall on it. emits black-colored light.
Chemistry
2 answers:
Temka [501]2 years ago
6 0
Black colors absorb all light wavelengths! Its black because all of the colors mixed together = black, and all colors are absorbed.
Nina [5.8K]2 years ago
3 0

Answer: absorbs all wavelengths of light that fall on it.

Explanation: The color of the object depends on the wavelength it absorbs and reflects. The object appears to be of the complimentary color which it absorbs.

White light is made up of 7 different colors. Black objects appear black because they absorb light of all visible wavelengths and reflect back very little.

White objects appear white because they reflect light of all visible wavelengths and absorb very little.

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Consider the following electronegativity values:
luda_lava [24]

Answer: option C. HF

Explanation: A polar bond is a covalent bond between two atoms where the electrons forming the bond are unequally distributed. Fluorine is more electronegative than hydrogen so the electrons in the bond are more closely associated with the fluorine atom than with the hydrogen atom.

7 0
3 years ago
The movement of the liquid in a thermometer shows changes in temperature. An increase in temperature indicates the molecules in
olya-2409 [2.1K]

Answer:

2: Moved faster and spread farther apart.

Explanation:

Restate the question: The movement of the liquid in a thermometer shows changes in temperature. An increase in temperature indicates the molecules in the liquid.

1. moved slower and closer together.

2.moved faster and spread farther apart.

3. contracted in size when heated.

4. expanded in size when heated.

Water that is cold does not have the energy to bounce of the walls, instead it is like a group of animals they group together for the warmth of the others when it gets really cold.

So it cant be 1.

We all know that power lines sag lower on a hot day (or a tire for a car, it has increases pressure). but those are different types of molecules.

So that rules out 3 and 4.

Which leaves you with 2.

The increase in temperature causes the water molecule to gain energy and move quickly, which resulted in water molecule that are farther apart and an increase in water volume.

Hope it helps!

7 0
2 years ago
Read 2 more answers
The absorbance of a garbanzo bean solution that had been diluted by a factor of three was 0.528. what was the concentration of t
Serjik [45]
The Beer-Lambert law states that A = E*c*l where A is absorbance, E is the molar absorbance coeffecient, c is concentration and l is path length. Therefore the absorbance is directly proportional to concentration, and by increasing the concentration by a factor of 3, absorbance will increase by a factor of 3 giving   A = 1.584
6 0
3 years ago
The specific gravity of water is 1.0. True False
Zielflug [23.3K]
The specific gravity of water is 1.0 True 
5 0
3 years ago
HELP ME ASAP TO GET BRAINLYYYY!!!!
Elina [12.6K]

Answer:

B C A

Explanation:

because as you pour the blue stuff in it will straight up go to the bottom (and has less blue coloring) Then it will go to the top (lil more blue coloring) then eventually the whole jar will be blue

hope this helps you out bro

5 0
3 years ago
Read 2 more answers
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